An Insert Ball Bearing Unit is a pre-assembled bearing system that combines a deep groove ball bearing with an outer housing, seals, and mounting features, providing ready-to-install, self-aligning, and maintenance-friendly support for rotating shafts in industrial machinery and conveyor systems.
1. Pillow Block (Plummer Block) Units
Cylindrical shaft support mounted in a block-style housing
Self-aligning deep groove ball bearing inside
Common for conveyor systems, general machinery, and material handling
Advantages: Easy shaft alignment, standard mounting, simple maintenance
2. Flange Mount Units
Bearing mounted in a flanged housing for surface mounting
Types include:
2-Bolt Flange – Compact, easy installation
4-Bolt Flange – High rigidity and load support
Take-Up Units – For adjustable shaft positioning in conveyor systems
Applications: Conveyor systems, packaging machines, food processing lines
3. Set Screw Type Insert Bearings
Bearing has a set screw or eccentric locking collar for direct shaft attachment
Eliminates the need for additional locking components
Suitable for compact machinery or frequent replacement applications
4. Self-Locking (Eccentric or Locking Collar) Units
Provides secure shaft locking
Minimizes slippage during high-torque operation
Common in agricultural, industrial, and packaging equipment
5. Sealed or Shielded Units
Bearings come with integrated seals or shields to prevent dust, debris, and contamination
Reduces maintenance frequency
Suitable for harsh or dirty environments
1. Bearing (Deep Groove Ball Bearing)
Function:
Acts as the rolling element to carry radial and axial loads and ensure smooth rotation of the shaft.
Materials:
An Insert ball bearing unit consists of a sealed bearing and a cast or stamped housing. Common models include the UC, UCP, and UCFL series. Specifications include the bearing’s inner diameter (d), outer diameter (D), overall width (B), rated dynamic load (C), and static load (C0).
UC Series Spherical Ball Bearings (Set Screw Type) Specifications
| Bearing Model | Inner Diameter (d) mm | Outer Diameter (D) mm | Total Width (B) mm | Rated Dynamic load (C) kN | Rated Static load (C0) kN |
| UC201 | 12 | 47 | 31 | 12.8 | 6.55 |
| UC202 | 15 | 47 | 31 | 12.8 | 6.55 |
| UC203 | 17 | 47 | 31 | 12.8 | 6.55 |
| UC204 | 20 | 47 | 31 | 12.8 | 6.55 |
| UC205 | 25 | 52 | 34 | 14 | 7.8 |
| UC206 | 30 | 62 | 38.1 | 19.5 | 11.2 |
| UC207 | 35 | 72 | 42.9 | 25.7 | 15.3 |
| UC208 | 40 | 80 | 49.2 | 30.7 | 19 |
| UC209 | 45 | 85 | 49.2 | 31.9 | 20.8 |
| UC210 | 50 | 90 | 51.6 | 35.1 | 23.2 |
| UC211 | 55 | 100 | 55.6 | 43.4 | 29.2 |
| UC212 | 60 | 110 | 65.1 | 52.4 | 36 |
Parameter Description:
d: Bearing inner diameter, corresponding to the shaft diameter.
D: Spherical outer diameter, fitting the bearing housing.
B: Total width of the inner ring, determining the installation space.
Rated load: Affects the bearing’s service life and load-carrying capacity.
Pre-assembled with housing, bearing, seals, and locking components
Self-aligning design reduces misalignment issues
Minimizes installation time and maintenance costs
Deep groove ball bearings with premium steel or hybrid ceramic balls
Reinforced housings for axial, radial, and combined loads
Long service life even under harsh conditions
Sealed & Contamination-Resistant
Integrated seals and shields prevent dust, dirt, and moisture ingress
Retains lubricant for extended maintenance intervals
Versatile Structural Options
Pillow block, flanged (2-bolt and 4-bolt), take-up, and set-screw/eccentric collar types
Suitable for a wide range of shaft sizes and installation requirements
High Precision & Smooth Operation
Precision-ground bearings ensure low vibration and stable rotation
Ideal for conveyors, industrial machinery, and high-speed equipment
Material and Performance Optimization
Cast iron, pressed steel, or aluminum housings for weight and strength balance
High-grade bearing steel or hybrid ceramics for load, speed, and wear resistance
Our Insert Ball Bearing Units are widely applied in:
Industrial Machinery: Conveyor belts, packaging lines, material handling equipment
Agricultural Equipment: Harvesters, tractors, and processing machines
Food & Beverage Processing: Stainless steel housings for hygienic environments
Automotive Assembly Lines: Shaft support in automated machinery
Heavy Industry: Mining, construction, and energy equipment requiring robust load handling
OEM and industrial supply with stable production and batch consistency
Customized solutions for specific shaft diameters, housing types, and sealing options
Advanced quality control for load capacity, alignment, and rotational accuracy
Fast global delivery and professional technical support
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Hi, I am Maxwell, I am an engineer in the field of bearing applications. I majored in mechanical and electromechanical engineering during college. After graduation, I worked for the top three "SKF" bearing companies in the world for ten years , during which I went to dozens of customers in different industries to help them solve problems in bearing applications; later I joined VKUKEN Bearing Manufacturing, and I will share bearing technical knowledge on this website from time to time. If you are a customer Please contact me to help you solve your problem; if you are also a technical expert in bearings, I am very willing to exchange technical knowledge about bearings with you.
